Grille cover material



FIG. 1 is a top plan view of a grille cover material showing our new design, it being understood that the broken lines depict the boundaries for the repeat unit of the design and further that the design may continue in one or more directions;

FIG. 2 is a partial front elevational view of the grille cover material designated by directional arrow 2 in FIG. 1; and,

FIG. 3 is a partial side view of the grille cover material designated by directional arrow 3 in FIG. 1.

It will be understood that the broken line showing in FIGS. 2 and 3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for grille cover material, as shown and descirbed. 